only top for doc

app/item/models.py

@@ -116,8 +116,6 @@ class Item(models.Model):
             if not key:
                 key = meta.attrib.get('property')
             value = meta.attrib.get('content')
-            if key == "thumbnail":
-                value = value.replace('/512p', '/1024p')
             if key and value:
                 if key in ('viewport', ):
                     continue
@@ -126,6 +124,7 @@ class Item(models.Model):
         data["url"] = self.url
         if "m/documents" in self.url:
             data["type"] = "document"
+            data["thumbnail"] = data["thumbnail"].replace('/512p', '/1024p')
         return data